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(-No Model.) 3 Sheets-Sheet 1. J. A. FELD & J. SIEBRECHT. GARBONIG ACIDGAS GENERATOR.

110,414,691. Patented Nov. 12, 1889.

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GARBONIG ACID GAS GENERATOR.

No.Y 414,691.

Patented Nov. 1,2, 1889.

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J. A. FELD & J. SIBBRlEGHT.y GARBQNIG ACID GAS GENERATOR.

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www 55555 l INVENTDR v UNITED i STATES PATENT OFFICE.

JOHN Al'Gl'S'l FELD, OF NEWYORK, AND JOHN SEHRIT, Ol" BROOKLY,

. DEXHEMER, Aldi 0F NRSV YORK,

CARBONlC-ACIDC=`|AS GENERATOR.

SPECIFICATION forming part of Lett-ers Patent No. 414,691, datedNovember 12, 11889.v

Application filed July 18, 1889. Serial No. 317,853. No modeld K licitknonn that we JOHN AUGUST FELD,'

vented an Improved ('arhonic-AcidGas Gench the "ollo\vin; l is aspecificaf l eraior, of' wh tion. p

This invention relates to a carbonio-acidgas generator olf theA kindwhich is intended to he applied directly to heer-holdingy vessels orkegs, so as to keep 'the heer atall times l'resh and under pressure.

.'.lhe object of the invention is 'to secure the Y pi-oper' formation ofgas, to relieve the gas trom impurities, and to regulate the pressure inthe gras-generator independently fronrtlhe pressure in the kep'. l

lt consists in the various features of improvement more fully pointedoutin the claims.

` In the accompanying' drawings, Figure l is regulator. Fig. 5 is anelevation of the enz,

tire apparatus on a reduced sea-le.'

The letters'u l; represent a pair ot' superposed vessels, the upperbeing' designed for the reception ot' diluted sulphnric acid and thelower i or the reception ot 'bicarbonate of soda. 'lhe vesselscommunicate hy the openings (1,"7 o', closed hysoit-ruhher valves dirf'yf secured, rcspectiveligto the valve-stems e* of. 0I' thesevalve-stems, onois a vtrii'le longer than the other. "lhc longervalve-stem di passes through a tuhe o, projecting' upwardl v Bothvalvestems u) o are at. their upper ends fastened l to a cross-har ai,which is hy screw u con-r l 'rms dal from the bottom ot vessel '0.

nected to elastic diaphragm c". phragm by nuts u' prevented fromslipping and is subjected to the actionof a springe, 'lhe upper end 'ot'screw c." carriesa nut d, beneath which a threaded tuhe aliencirelingthe screw, engages a'sockct a and hears upon spring all. v

The entire device thus far described hhs for its ohject to regula-te theflow of acid into the vessel I. lhe acid will tloxv into such vesselthrough opening' n to mix with the hicarhi'mato ot' soda. thus termedrises in the tulle c through the vessel l and ahove the surface ot` theacid contained in said vessel. Fromthe mouth ot tuberi the gas entersthe u jasher through tube c. The gas infformin'yr will naturally pressupon the valves ui" u2 and have a'- tend- ;eney to' close such valvesThese. valves heing connected to the elastic diaphragnnjt is eviden-tthat hy adjustingr .the tension ol the latter the pressure ot' the gas'in the generator may he automatically regulated. This is, moreover, thecase, as the acts also directly againsty the diaphragm.

The tension of the diapragnr is regulated hy screw al, which increasesor .diminishes the tension of the spring all. lVhe'n the gas in formingexceeds the desired pressure, it will close the acid-valve a?, and thusshut off the supply ot acid 5 but as the gas-valve ai' is upon a longerstem the. lattery will not quite close, but permit the escapevof the gasinte the. Washer. rlhns an explosion of the apparatus, caused by theintroduction of an unduly great body of acid into vessel I), isprcvented. \\'hen the 'valve a. is seatetht-hesoftruhher valve a? ispressed against its seat to permit the. additional mot-ion of the valvea5".

sin nld be entireljv closed. This is effected by l screwing the screw alupward until it bears i against n-ui rd", and thus draws screw ai* up. i'lhe screw in turn draws up valve-stem ci. l- .ln the vessel l; there isplaced upon sutl able projections or ribs b' a vessel h2, hav- I ing'perfl'irat-ed bottom and sides.' This vesi selceniains an upright.- tuher". 'lhe upper end of tuhc l): is provided with a funnel h" directlybeneath A.the valves u? ui. The lower` parti of tube h discharges 'uponthe botitom of vessel lf2 by lateral openings.

bicarbonate of soda is placed in the vessel h2, and the acid will frompeningc15 flow through tube Il, to gradini-115- rise from the hoty tomupwards. lhusthe bicarbonate of soda will beassaile'd hy the acidfromthe bottom The carbonio-acid las Thev and not from the top. ',l`hc'advantage of this construction is that the upper pariof the soda willremaindry and no deposit of Epsom saltsy forma-tion o'l' the gas. Thegas being`formed '1n the manner described and escaping atthe mouth oftube a, enters a .tube c, that carries it 1o the gas-washer. Thegas-washer l proper is incloscd by a long vessel d, closed by aperforated screw-cap d', from which de'- pcnds a tube d?, the lower endvof which carries a perforated metal diaphragm d and a felt percolatordt. The diaphragm da and pcrcolator d* are reeei(ved by a socket d5 atthe lower end of the gas-washer (Z6 propeu. having a funnel d' at. thetop. The socket d? is closed by a screwplug di, so as t-o leave achamber f?""between the screw-socket and the percolator. ln the lowerpart of-vessel d, beneath washer d", there is left alarge space orchamber d, the upper part of which by tube (.Z" communicates with theregulator which adjusts the pressure within the cask.

`later is poured into funnel d? to fill vessel Z. The gas passes fromtube c `through the'perforated plug d and tube d2 into the space d8.From thence the gas rises up and filters tirst through the pereolatord,thence through the perforated disk. d, and finally through the water in,vessel ("Z After reachingthe upper part of vessel d the gas de'- eendsbetween the walls of vessels (l d until it reaches the discharge-tube d.

Any sediment that may have remainedin the gas will deposit in thechamber d 1S, which may from time to time be cleaned out. Thus perfectlypure gas alone will be delivered by -the apparatus.

Te have found thatthe pressure under which the gas is generated mustusually be considerably.stronger than that at which the gas is to bedelivered. For this reason aseoond regulator is-secured to the tubed.'lhis regulator is more clearly shown in Fig. ft. It

consists ot' the diaphragm e, to which a val vestcm e is secured.l Thisvalve-stem carries its valve e2 beneath al perforated partition e" andwithin a tube et. Above such tube and partition there is the exit-pipec", communi eating with the cock e", which by a rubber hose may beconnected to the barrel. 'l`he diaphragme is acted upon by the spring07,;

which may be adjustcdby the screw 0"'. By turning the screw the pressureis regulated..

Brieiy repeated, the action ot' the appara- Itus is as follows: Thespring a beingset, the acid in vessel a Hows gradually through tube by'into vessel I). llere it rises to actnpon the soda from the bottom up.passes through the washer d and is delivered to the 'secondregulator;rlhis regulator is set to the pressure desired in fthe barrel.

Thus the barrel will receive clean gas under a constant pressure. i

Vi hat we claim is- 1. The combination, in a gas-generator, of anacid-holding vessel, with a soda-holdingr vessel communicatingtherewith, and with apar of so't't=1'ubber valves a? ug for cont-rolling'the admission'of acid and the discharge ot' gas, bot-h valves beingconnected to` an elastic The 0as 0'enerated ing valve-stems a* a,.ofunequal length, and

with tube o, through which the longer valvestem passes, substantially asspecified.

4. The combination of an acid-vesselaand a connnunicating sodavessel b,with a gaswasher connected to vessel a, and with a tube A passingthrough said washer, and wit-ha vessel d, encircling the gas-washer, thevessel d .ext-ending below the washer to forni. the deposit-chamber d,and with the dischargetube d, opening into said chamber, substalr'tially as specified. i y f i JOHN AUGUSTFELD.

,TonN slltnnuon'r.

W itu esses:

1?..v. Bernstein, WM'. WAGNER.

